Features

Every number tagged with its market and source.

Available now

Profit calculator

Sale price, shipping, supplier cost, ad rate and VAT against an editable fee profile per market. Shows profit, margin, ROI and break-even.

Listing risk checker

Paste a title or description; JAM highlights words that commonly lead to policy problems, with reasons. Your admin controls the word list.

Cross-market comparison

Enter one product and see US and UK results side by side, each in its own currency.

Watchlists, saved searches, history

Organise ideas by market. Your research history is private to your account.

Admin panel

Manage users, roles, fee profiles, risk words, pricing and branding.

Requires marketplace connection

Product research & top sellers

Search active eBay listings by keyword, category, condition and price — once eBay API access is configured.

Sales history & trends

Only from authorised data providers. We will never show estimated sales as real data.

Competitor & seller research

Based on what eBay's APIs make available.

Supplier price comparison

AliExpress, Amazon, Alibaba and Walmart via their official or affiliate APIs.